Artichoke Stat Summary
Plant Spacing: 36" (914 mm)
Row Spacing: 72" (1828 mm)
Planting Depth: 1/2" (12 mm)
Plants Per Person: 1
Soil Temperature: 50-85°F (10-29°C)
Days to Emergence:
Recommended Soil PH: 6.0-6.8
Seed Indoors: 8-12 weeks before transplanting
Earliest Outdoor Planting: After Last Frost
Can direct seed outdoors
Can seed indoors
Grow artichokes from offshoots, suckers, or seed. Plant artichokes in full sun. Artichokes require rich, well-drained, moisture retentive soil with a soil pH between 6.0 and 6.8. Add compost and organic matter that is rich in phosphorus and potassium to planting beds in advance of planting.
It is best to start artichokes from divisions that are spaced 3 feet apart in rows about 6 feet apart. It is possible to grow artichokes from seeds by starting seeds indoors about 8 to 12 weeks before the last spring frost. Sow several seeds 1/2 inch deep in a 3 inch container filled with a soilless mix and set in a warm location.
Once seeds sprout, move plants into a bright light and fertilize with half-strength solution of fish emulsion every 10 days. When the first true leaves form, thin each pot to 1 plant; transplant into a 5 inch pot. After hardening off and the danger of frost has passed, plant in garden so its crown is just above the soil surface.
Keep plants well supplied with water during the growing season; however, don't soak plants and allow to almost dry between waterings. Feed plants monthly with fish emulsion. Mulch generously around plants to keep the soil cool, moist and weed free. After harvesting the central stem, cut it back to 1 foot to encourage side shoots.
Harvesting and Storing Artichoke
Use a knife to harvest apple sized buds before they open by cutting stems 2 or 3 inches below the bud. Artichokes will keep in the refrigerator for up to one week. Artichokes hearts can be frozen after cooking, canned, or pickled.
Artichoke Insect and Disease Information
Aphids and plume moths can attack artichokes. Hose off aphids with a spray of water. Keeping plants vigorous by providing sufficient moisture, nutrients, air circulation and sunlight is the best defense against diseases.
Artichoke Yield Information
Each artichoke plant will produce between 5 to 10 buds for harvesting.
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